Improvement in governors



W. N." COSGROVE & T. MEE.

GOVERNOR.

Patented Jan.9,1877.

N.PETERS. PHOTO-UTHOGRAFHER, WASHINGTON, D C

UNITE STATES PATENT OFFICE WILLIAM .N. OOSGROVE AND THOMAS MEE, OFFABIBAULT, MINNESOTA.

IMPROVEMENT IN GOVERNORS.

Specification forming part of Letters Patent No. [86,l 16, dated January9, 1877; application filed February 14, 1876.

To all whom it may concern:

Be it known that we, WILLIAM N. GOS- GROVE and THOMAS MEE, of Faribault,in

the county of Rice and State of Minnesota,

specification, reference being had to the ac companying drawings.

The object of our invention is to furnish an automatic cut-off, wherebysteam can be used in the cylinder of a steam-engine with great economyby cutting off steam at any point in the cylinder where the regularmotion of the engine requires it.

In the accompanying drawings, Figure 1 is a ftsectional or end view ofan automatic cut- 0 A is a friction-wheel attached to screw B, which islocated on flange I by two bearings, one at the point of the screw andone at the verge of flange I. Screw B is intended to raise and lowerrack O, which is held into place by flange friction-wheel G, and meshesinto spur-gear D on main shaft H. Spur'gear D is a part of a long sleeveor hub of eccentric F. Eccentric F is intended to work the cut-offvalve. J represents the face of one of the flanges which worksfriction-wheel A. The face of the flanges is made of a softer materialthan friction-wheel A by cutting a groove in the wheel J and filling itwith leather or other suitable material 23. Eccentric E is stationary onshaft H, and works the inside valve.

Fig. 2 represents a longitudinal view of an automatic cut-off on asection of main shaft H. Flanges J are bolted together at a sufficientdistance apart to allow friction-wheel A to revolve between them. Theverge of flanges J is fastened to a point onthe bed of the engine, andnot allowed to revolve with the main shaft.

Flange I carries friction-wheel A, screw B, rack O, and friction-rollerG, and is stationary on main shaft H.

When the speed of the engine is increased or decreased the governor actsat once by moving flanges J horizontally on main shaft, which is to setfriction-wheel A in motion, and screw B to raise or lower rack C, gearedto the hub of eccentric F, which will set it immediately in the requiredposition.

Steam is always admitted into the cylinder at boiler-pressure, and iscut off at a point necessary to do the work.

When the engine is running at its regular speed friction-wheel A isallowed to revolve between flanges J without any interference, and holdseccentric F unchanged. When the governorweights drop and move flanges Jtoward the eccentrics screw B moves rack and gives the engine moresteam. When the governor-weights are thrown out, and draw flanges back,the motion of friction-Wheel A is reversed and motion of engineretarded.

This cut-off can be worked by any steamgovernor.

What we claim is- In combination with the eccentrics E F, the latterbeing movable on main shaft H of the parallel beveled flanges J, theangular rack v(l, the screw-shaft B, carrying the beveled friction-wheelA, the segment gear-wheel D, and a governor mechanism, substantially asspecified.

WILLIAM N. OOSGROVE. THOS. MEE. Witnesses:

Jno. S. JORDAN, E. E. SMITH.

